Reed Switch Sensor Module

The Reed Switch Sensor Module is a simple and effective magnetic contact switch that detects the presence or absence of a magnetic field. When a magnet is brought close to the sensor, the reed switch closes, allowing current to pass through and triggering a digital signal output. This makes it ideal for Arduino, Raspberry Pi, ESP32, and other microcontroller platforms.

This module is widely used in door/window sensors, burglar alarms, automation systems, and proximity detection. It features an onboard LED to indicate switch status and includes pull-up resistors for stable digital output performance.

Key Features:

• Magnetic contact switch (reed switch) for open/close detection
• Outputs digital HIGH/LOW signal based on magnetic field
• Operating voltage: 3.3V to 5V DC
• Built-in signal indicator LED
• Compact module with mounting holes
• Compatible with Arduino, Raspberry Pi, ESP8266, ESP32, and more

Applications:

• Door and window position detection
• Home security and burglar alarm systems
• Proximity sensing and magnetic trigger devices
• Industrial automation and limit switch replacement
• DIY electronics and smart home projects